[天线]20 RC-Load Bow-Tie Antenna for Improved

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 10, OCTOBER 2004 2555 U
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RC-Loaded Bow-Tie Antenna for Improved JQVw6*u{  
Pulse Radiation zi DlJ3]^  
Andrian Andaya Lestari, Alexander G. Yarovoy, Member, IEEE, and Leo P. Ligthart, Fellow, IEEE <PuB3PEvV  
Abstract—In this paper, a loading technique for improving pulse >stVsFdV)  
radiation from bow-tie antennas is introduced. This technique allows eL$U M  
transmission of short transient pulses with very small latetime Lb3K};SIV  
ringing and relatively high radiation efficiency. It makes use gPhw.e""  
of a combination of a constant resistive loading along the antenna O%Gsk'mo  
and a capacitive loading with linearly increasing reactance toward "3KSmb   
the antenna ends. The constant resistive loading is applied using IP4b[|ef  
volumetric microwave absorbers to cover one side of the antenna /B#lju!  
and the linear capacitive loading is realized by constructing narrow ^Hhw(@`qf  
slots on the antenna surface. Relatively high radiation efficiency is e7)%=F/)  
achieved by choosing the location of the slot nearest to the feed >[P7Zlwv4  
point in such a way that radiation from it combines constructively (gJ )]/n  
with radiation from the feed point. Using a 0.8-ns monocycle for excitation, SpTORR8  
the technique results in a level of late-time ringing of lower h/+I-],RF  
than 40 dB and at the same time the peak value of the transmitted nluyE
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pulse is 54% higher t .. +hvIJv ?  
4>wIF}\  

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不错，正在研究bow-tie，多谢

不错，研究研究！！！